ASD Electronics Ltd. - hksq.org · CKD customer Q 3. CBU 4. RMA 5. Drive quality improvement from...

Agenda 29th, April

14:30 – 15:15 Introduction- Action Group- Who is ASD- Quality System, Quality Performance, Lean, etc.

15:15 – 16:15 Factory tour- Lean Production

16:15 – 16:30 Break

16:30 – 16:45 Q&A

16:45 – 17:00 Group photo

ASD Electronics Ltd.

- Action Group Evolution

- ASD Vision

- ASD Organizations

- Product Road Map & Competence

- Sales Performance

- Factory Brief

- Quality System

- Lean Manufacturing

- Action Group Evolution (3 pages)

- ASD Vision

- ASD Organizations


- Sales Performance

- Factory Brief

- Quality System


1976 Founded with a capital of US$80,000. Clock radio launched to market.

1979 Established Optoelectronics Plant. Capital reached US$400,000.

1985 Developed dual-deck Hi-fi system and world smallest 3-in-1 combo (radio, tape, recorder and TV).

1987 Developed 6’’ color TV.

1988 Established IT plant and HQ in Chung Li. Subsidiary in Malaysia (Action Industries).

1990 No. 1 leader for development of portable color TV/monitor combo products.

1992 Announced 10’’ color CRT display. Subsidiary office in USA (America Action).

1993 Announced 4”LCD TV and 15”/17”color display. Far Year HK indirect invested in Shenzhen Action.

1999 Established Shanghai Far Year Technology.

2001 Shenzhen Action won the Shenzhen Top 100 Hi-Tech Award.

2002 Public publication into stock market.

2003 Total Sales reached US$300 million. Singapore Action publicly listed in the Singapore stock market.

2004 Issued Zero Coupon Euro Convertible Bond (ECB) of US$35 millions.

2005 Won 50 fastest growth awarded number 22.

2006 ASD establishment for Philips OEM business.

2007 Established another new plant in China Ji’an.

2008 ASD started to be a major supplier for Philips AVM business.

2009 Merged Taiwan Best and started to involved 3C retailer store business and selling in China domestic market.

2010 Establishment of ASD self-owned factory.

• 10 branches worldwide under Action Group

• 3200 staffs in Action Group

Groups Locations

Headquarters Taiwan

AFY Hong Kong

ASD Shenzhen, China

AAS Shenzhen, China

ATS Shenzhen, China

AMP Penang, Malaysia

ASJ Shanghai, China

AST Shanghai, China

ATJ Ji’an, China

AXN America

ASD is a member of Action Group who is a 36 years consumer electronics group company.

Action Asia Limited (Singapore shareholder) is sub-group of Action Group, and ASD is a company under Action Asia Limited.

ASD is company owned competent Developing and Manufacturing capability in PDVD/TV, DPF and DVDP and blue–ray DVD products.

ASD serves Philips as the key OEM supplier for their AVM business for years, supporting Philips become the dominated brand in Portable DVD world wide with sales volume of 3M in year 2010 and No. 1 brand of DPF in Europe.

Manageable capacity, 3KK units monthly, for consumer AVM products, based on ASD current financial strength / supported by two stock listed company in Taiwan and Singapore, RD capability / 160+ RD engineers and Manufacture facility / 38,640 m²land area.

ASD was awarded global “Best Supplier” of Philips in 2010

With “Lean” operation and culture built, the factory capacity is flexible meet any potentials.


- ASD Vision (3 pages)

- ASD Organizations


- Sales Performance

- Factory Brief

- Quality System


打拼成为“PHILIPS”的

核心策略伙伴及最优秀供应厂商

WE PROMISE TO MAKE BEST EFFORTS TO BECOME

PHILIPS EXCELLENT SUPPLIER AND CORE STRATEGIC PARTNER

求活求变

冲刺稳健

创新保守

真诚

REWARD

SINCERITY HARMONY

AGGRESSION ACTION

INNOVATION

和谐

进取行动

创新回报


- ASD Vision

- ASD Organizations (1 page)


- Sales Performance

- Factory Brief

- Quality System


CQA DQE QCD SQM

1. Process quality plan

2. IPQC

3. OQC

4. OQA

5. Drive issue fixed in process

6. Guide prod. Related in Quality improvement

1. Material verification

2. Material release

3. Material spec

4. Product verification

5. Product spec

6. Product release

Carrie Zou BJ Jiang

JQM/CQO

Henry Kuo

Sam Li Crays Jue

QSQRE

1. New model reliability test

2. New material reliability test

3. PS models ORT

4. ORT test plan control

1. SKD customer Q

2. CKD customer Q

3. CBU

4. RMA

5. Drive quality improvement from SKD, CKD, CBU etc.

1. SQM plan, strategies

2. IQC

3. New supplier certification

4. QPA / QSA

5. Supplier disqualification

6. Drive material issues fixed

7. Leverage Key component supplier’s quality improvement

1. Quality system

2. Quality system Certification

3. RoHS control system

4. Safety part control system

5. Vendor RoHS / Safety audit

Hua LiSitu Shujian


- ASD Vision

- ASD Organizations

- Product Road Map & Competence (3 pages)

- Sales Performance

- Factory Brief

- Quality System


2009-20102006 2007-2008 2011

Only Portable DVD7’’ & 8.5’’

Portable DVD

- Dual Screen- Slide screen- iPod function- TV

Clock Radio w/DPF

Portable DVD with TV- 7’’ & 8.5’’ & 9’’

DVD player

Blu-Ray - Portable- Home Player

Non-disc Media Player

DVD+ATSC+M/H

DPF w/ touch key

Home Media Player

Current Human Resources:

New Model Average Time to Market: 15weeks

HW Engineers: X65SW Engineers: X25Mech. Engineers: X30DQA: X32Supporting staff: X22

Capacity:38 models and extended 150 versions in 2010

Wk0 Wk4 Wk8 Wk12 Wk15

HWPlatform

PCB layout

SWDev. & Ver.

MechanicalTooling

Packing

Maturity TestDVT/EVT

TR

PMT

• Owned experienced R&D and operational engineering staffs

• Action Group, more than 10 years portable audio/video product R&D and mfg. experience

• ASD R&D and Engineering team focus developing & mfg. in audio/video electronic devices more than 5 year.

• 24 hours response way of working

People System Resources

• Certified and qualified by ISO, Wal-Mart, 3C, etc. 3rd parties

• SAP system application

• SFC traceability application (to be ready by 2011 Q2)

• All the current system built to focus audio/video product in R&D and mfg.

• Action Group, cross-factories support from 6 locations - All the group focus upon audio/video products R&D and mfg.

• Flexible capacity:

- 3KK/month capacity in ASD

- Customer own capacity in ASD under customer demand

• Strong key component sourcing capability (Leveraged from Group capacity in cost and volume)

• Panel/loader sourcing competence from price & volume from long term of cooperation relationship

• Key component “multi-resources single buy” strategy

• Key components build strategic cooperation suppliers pool

Supplier Chain Development Competence

• Strong developing engineering team built thru more than 30 new models/yearly practice

• Successful achievement from DVDP, PDVD/TV, DPF and BD series in “Quick –Design” from mature platform copy

• New models design leveraged from DFM, DFQ and DFC application

• Strong experienced engineering team in product development capacity

• Fast time to volume ramping vs. yield rate (2wks), Short time to market (15wks)

• Flexible capacity, e.g. Wal-Mart black Friday deal support, 1 million units in 45days

• Audio/video product 6 million units/year delivery performance

• Lean mfg. capability is rooted in operation


- ASD Vision

- ASD Organizations


- Sales Performance (2 pages)

- Factory Brief

- Quality System


Year Sub - total

Y2005 31K

Y2006 26K

Y2007 1.3KK

Y2008 1.5KK

Y2009 3.2KK

Y2010 5.7KK

Total 11KK 0.00

1.00

2.00

3.00

4.00

5.00

6.00

Y2005 Y2006 Y2007 Y2008 Y2009 Y2010

KK pcs

Product Line From Y2007 to Y2010

Portable DVD Player 7.5KK

DVD Player 2.1KK

Digital Picture Frame 1.5KK

Total 11KK


- ASD Vision

- ASD Organizations


- Sales Performance

- Factory Brief (3 pages)

- Quality System


Building AFloor area: 13625m21st floor: PCBA SMT 2nd floor: PCBA DIP3rd floor: ASD Office

Building BFloor area: 20832m21st floor: Warehouse2nd floor: DPF+DVD player3rd floor: Portable DVD0

Building # C,D,E, F1. Dormitories2. Dining rooms3. Entertainments, ATM, etc

facilities

Maximum Capacity : 3KK/month

Traditional production--- Belt Line Lean Production %

Lean Production--- Cell line:

Lean Production: each cell 8 operatorsFlexibility: High Mix Low Volume models

55.5%44.5%

传统生产模式

精益生产模式

Traditional line: 55.5%

Lean Production: 44.5%


- ASD Vision

- ASD Organizations


- Sales Performance

- Factory Brief

- Quality System (10 pages)


Certificate Certified by

UL

3C

Thai TISI / Malaysian SIRIM

Wal-Mart ES / GSV / FCCA

BEST BUY SER / C-TPAT

ISO9001:2008 / ISO14001:2004

UAT_534C(EICC) / UAT_520+++ (4QP) / RoHS / Process / ESD

DMT PMT PSCVT DVT

Quality target proposedSustainability requirements proposedPredecessor field quality analyzed

Sustainability requirements approvedPast project performance analyzed

Quality targets committed , first field quality predictionApprobation requirements approvedSafety risk assessment approvedProvisional product validation test plan Measure system capability evaluated

Approved planQuality target verifiedSafety risk assessment updatedStart approbationSustaining scan finalized

Quality organization in place for outgoing quality and field quality monitoringApprobation approved: drawings and paper of introducing countries available

Agreement for delivery and dispensations approved(including safety and approbation)Field call rate and predictions approved

New project instruction

Risk assessment

Define team members

Define milestones.

PQP

Safety approbation plan

Key components release plan

CTQ Deployed

Design FMEA

PAR process

Functional Specification

(FRS,CRS,Sh190) defined

HW evaluation, PAR process

Product spec. confirmed

CTQ verification,

Test case finalized

Beta, Halt test

IFU/QSG preparation

Safety and Environmental

checklist approach

DVT/DMT: Mechanical reliability,

MTBF

DFM, PFMEA ,IR Release

PMT: Process evaluation

SMT

Outstanding Issues action plan

PAR process & close

Waive & concession

CR sample approval

Shipment Release

Client on-site QA inspection

other stuffs for MP ready

ORT process

2nd tier supplier monitoring

Weekly FOR review

Quality Control plan

ECN process

FFB/OSFA/IWS

MS improvement plan

X 5-10 X 60-120

15weeks

Kick off

X 40 - 60 X 300- 1500

Key component reliability test control

C24, C168, C520 reliability test control

RoHS test control

ShippingOn-Time Delivery

Supplier Receiving IQC Warehouse

- Packing check- Q'ty, marking, etc. check

OQA Assembly

Quality Service

- Identification control- FIFO- Periodical cycle count- Shelf life control- Environmental Control

- Supplier chain strategy- Supplier dis-/ qualificatioin- Supplier quality management

- Inspector certification- Material spec.- Sampling plan and Inspection standard- IQA process- MRB process

- Inspector certification- Quality control plan- SOP - Check List,

Cosmetic and function spec.- Quality issue treatment procedure

- Site quality service process - RMA process- Correction/Improvementprocess

- Operator/Inspector certification

- Quality control plan- SOP, Cosmetic and function spec.- First Article check & last article check- Patrol audit- 100% full function test - ORT- Calibration - Quality issue treatment procedure

Kiting and Handling

- Handling SOP- Identification control

- SOP- Packing requirements checklist

Operator self inspection:Document: SOP, issues historyExecute: OperatorCosmetic check before assembling part Cosmetic check after assembling part

Frequency:100%

IPQC Patrol Audit :Document: SOP, issue history, Check list SampleExecute: IPQCOperator operation vs. documentEquipment parametersDisciplineKey component inspectionFAI and LAI

Frequency: according to SOP

Operator Handling Control:Document: SOPExecute: Operator Packing for Cosmetic Protection Delivering for Cosmetic PreventionOperation Discipline

OQA :Document: SOP, issue history, Check list, Sample, Safety/SW/IFU criteriaExecute: OQC

Cosmetic checkFull function inspectionFit checkPacking check

Frequency: according to SOP

Issue Treatment:Document: SOP, ProcedureExecute: Line management, PE, PQE Reflection processPE/PQE evaluate to1. Hold product & Quarantined from quality abnormality sheet2. Record and Traceability 3. Root cause/ Correction process

Full functiontest

Cosmeticcheck

Storage

Sub-assemblyMaterialPrepared

Assembly Function test Burn-in

1.IPQC Patrol Audit2.IPQC Sampling Inspection, FAI, LAI3.Operator Handling Control

Packing OQACustomer

OQA

1.IPQC Patrol Audit2.IPQC Sampling Inspection, FAI, LAI3.Operator Handling Control

1. Incoming Inspection or STS

2. Monthly Quality Scorecard and quarterly review meeting

3. Quality System Guidance, if needed.

1. Incoming Inspection or STS

2. QSA/QPA process

3. Monthly quality scorecard

4. Monthly review meeting ,if

needed

5. Source Inspection, if needed

1. Incoming Inspection and Cpk

monitoring

2. QSA/QPA process

3. LRR control

4. Monthly quality scorecard

5. Weekly and/or monthly

review meeting

6. Dedicated engineer doing site

quality mag’t, CIP promoted

7. Source inspection, if needed

BacklightConnector

Plastic Parts Hinge

SpeakerRC

PackingLabel

Instruction sheetScrew

HardwareSMT/AI component

TFT,IC

C

B

SQM resources allocation:

Group A : 70%

Group B : 25%

Group C : 5%

Adapter/Power BPCBA

Loader Battery

Wire/Cord

A

Qualified Supplier Registration

•Qualified Suppliers List

New Supplier Survey

•New supplier Survey Sheet

Supplier Management Incoming QC•Incoming Inspection Procedure •Material Approval Sheet(spec.)•Incoming Quality History•SAP control

Process Survey•New Built ComponentProduction Survey• Periodically Audit•Site located management

Supplier Quality Management System

Source Inspection

•External Inspection operation Procedure

Incoming Inspection Operation•Incoming Sampling Standard •Loosen/Tighten/STS Standard •Inspection standard•Fist Art Golden Sample

Nonconforming Material Management•MRB Operation • CAR•IQA Control •Labeling Management•Concession Procedure

Conforming Material Management

•CPK Statistical Application•Labeling Management•FIFO control

Incoming Materials Performance Assessment• Monthly Performance Assessment(score card) • Material incoming control adjustment

Monthly Suppliers whose grade is under 70’ Review

• Meeting With Supplier Individually

Guidance Process for Qualified Supplier•Supplier Management Procedure•Plan For Supplier Management( Resources allocation based on A,B,C component family classification )

Annual Quality Assessment

Disqualified/Re-qualified• Supplier QualificationCancelled Report

•Supplier Re-qualifiedApplication Report

Supplier Quality SystemAudit• Periodically Audit•Quality system guidance

Supplier Receiving (WH) Raise Receiving Sheet (WH)

Inspected

JudgmentMRB ?

Ship to Stock

Treatment Decided

Screening Material Move to

Warehouse

No

Non-Conforming

WaivedRejected

Rejected

Accepted

Return

Sorted

Conforming

Sampling (IQC)

Correction Process: * 8D report* Process audit

MRB core Team:CE, SQE, PQE

ANSI Z1.4 Level ⅡCritical: 0 Major: PCBA:0.25, others:0.4Minor: Packing & Accessories:

1.0, others:0.65

DMT: 5 sets Climatic(high/low temp.) test. 5 sets bare drop test. 2 boxes drop & vibration test. 1 box stacking test. 5 sets socket & switch life test. 30 sets CTQ validation. 40 sets design maturity test @40℃burn-in 1000Hrs.

DVT DMT PMT PS

DVT: 5 sets Climatic(high/low temp.) test. 5 sets bare drop test. 2 boxes drop & vibration test. 1 box stacking test. 5 sets socket & switch life test. 30 sets CTQ validation. 30 sets full function @40 ℃ burn-in 1000Hrs .

PMT: 5 sets Climatic(high/low temp.) test.2 de-boxes drop& vibration test. 20 sets process maturity test@40℃burn-in 168Hrs .

Finished product: Burn-in reduction: 100% vs.30% product 2 hrs @40℃ burn-in 40 sets full function burn-in 24Hrs/model family/day. 10 sets full function burn-in 168Hrs/model family/day. 5 sets full function burn-in 520Hrs/model family/month. 5 sets Climatic (high/low temp.) test/model family/month. 2 sets drop& vibration test /model family/month. 2 sets socket & switch life test /model family/month.

Component level:60 pcs AC adapter power dynamic on/off burn-in 168Hrs 30 pcs battery charge & discharge 30cycles /spec/supply/month. IEC/UL safety test 3pcs each /3models/month

MP: ORTDeveloping Phases

32 pcs/lot (lot: less than1800pcs)

1 pc/lot

1 pc/lot

Accepted

Rejected

Warehousing

Judgment

Escalated to QA manager

Screen/Rework100%

Reject Report

MRB?(Risk assessment)

Treatment Decided

Scrapped

Finished Goods

Sampling

Cosmetic Check

Full function test

Packing/IFU content Check

Product vs.CR samplecheck

Inform customer

Correction Process: * 8D report* Traceability & Identification

MRB core Team:NPI, PE, PQE

48 hours

24 hours

Failure symptomConfirmed

Root CauseAnalysis

Root CauseAnalysis

Containment Plan

Preventive/ Corrective Actions

Standardization & Close

Root CauseAnalysis

Customer CQA PQE/PE RD/DQE SQE

Initial 8D Report

Approval

Issue

Implementation

Dedicated CQA/COE

On site supporting ?

Escalated ?

72 hoursFinal 8D Report

Approval & Close

QA Leader

Review & Confirmation

Approval

Informed


- ASD Vision

- ASD Organizations


- Sales Performance

- Factory Brief

- Quality System

- Lean Manufacturing (8 pages)

CSD

Alex Zhang

Projects team

Leader

Champion JiangPhilips

Steven Fang

Lean CoordinatorOu Ming/Sheng Zhigang

Production

Sun Liang

Planning

Zhu Weibo

Engineering

Gary Yang

Purchasing

Meya Huang

QC

Crays Jue

Warehouse

Mo Caijiang

GM

King Yang

consultant ASD Lean TeamCSD：财团法人中卫发展中心Corporate Synergy Development Center

Formed in July, 1984 by the Industrial

Development Bureau

A Team Fully Dedicated To Promoting

Industrial Cooperation and Progress

Number participated in CSD has reached

170, and number of registered factories in

CSD up to 2500 covering 24 kinds of

industries, and influence of manufacturing

industrial production value is up to 1/3.

Dedicated Team

Mar 2011- Apr 2012

4. Improvement Plan Draft

As-Is Problem Define

Set up Objectives

5. Deploy improvements

M’TL Handling

Benchmark line set up

Productivity

Lead time

• Continuous Improvement

• Productivities Improvement

• WIP & Stock Improvement

• Establish JIDOKA (自働化)

Sys.

• KANBAN Management

• Pull production System

Jul-Sep 2010

1. Lean Concept and Tools Training

2. As-Is State Review

3. Invite Philips team to have close review with CSD

7. Projects review

8. Results Presentation

Oct-Dec 2010 Jan-Feb 2011

6. Review with Philips

期程第一阶段第二阶段

期間 2010/7-2011/6 2011/7-2012/6

目標

1. 縮短生產Lead Time2. 降低庫存3. 提升生產力4. 減少不良率

1. 縮短生產Lead Time2. 降低庫存3. 提升生產力4. 減少不良率5. 人力低減

課題

1. 降低零件庫存2. 縮短生產流程(L/T)3. 提升作業生產力4. 拉式生產系統局部建構

1. 持續點庫存降低及生產力提升2. 簡易自働化系統導入3. 目視化管理4. 拉式生產系統全面架構

作法

1. 物與情報流程導入

2. 物料需求管理、交期管理、進料管理&倉庫管理、配送管理等

3. 現場Layout及作業改善4. 生產指示系統改善5. 2S(整理/整頓)

1. 情報流程改善2. 整流及流程化3. 定時或定量搬運系統導入4. 換模換線改善5. 自働化導入6. 2S(整理/整頓)7. 製造現場目視化管理8. 改善措施標準化

• Y2010 (Aug-Jan)

20%

• Y2011

10%

Total: 30%

Lead Time时间缩短

PPH生产力提升

WIP库存天数-金额

• Y2010 (Aug-Jan)

20%

• Y2011

10%

Total: 30%

• Y2010 (Aug-Jan)

15%

• Y2011

10%

Total: 25%

Yield rate品质提升

• Y2010 (Aug-Jan)

20%

• Y2011

10%

Total: 30%

NO. Description Jul-10 Aug-10 Sep-10 Oct-10 Nov-10 Dec-10 Jan-11 Feb-11 Mar-11 Apr-11 May-11 Jun-11

1Lean production Training

Courses

2Value Stream Mapping

(As-Is)

3Baseline measures

Review

4 Define the problem

5To Draft The

Improvement Plan

6Setting the challenge

objectives

7Layout & Operation

Improvement

8 6S Improvement

9 Projects Presentation

No Lean No Project Actual Status Leader Team member

1AAS-LEAN-

001

Video BU pre-forming PPH improvement : 20%

Battery: 50pcs to 62pcsPanel: 41pcs to 50.3pcs

Done 张安生张安生,游慧兰,韦友华,佘有盛

2AAS-LEAN-

002PCBA SMT on time shipment: 98%

On time delivery:78%----> 83%----> ??

On going

朱伟波黄珉全,欧立娇,鲍祥孝,何异江,刘小静,周俊峰,李应平

3AAS-LEAN-

003

Home BU testing capacity improvement: 25%

Testing PPH : 27pcs/H to 34pcs/H, improve 26%

Done 周俊峰罗孝华,李教辉,刘永安，施扬毅，李应平

4AAS-LEAN-

004QA working Eff: 25%

Eff improve: 39%:2.5 PCS/H to 3.6PCS/H

Done 施扬毅岳长明,陈远洋,张政,曾建军,周理论,刘永安

5AAS-LEAN-

005

Portable model set up Cell mode1.PPH: 3.87pcs2. Line balance: 90%3. Change over: 5 mins.

1.PPH: 2.66pcs to 4.4pcs2.Line balance: 78% to 92%3. Change over: 30 minsto 15 mins.

Done 杨勇陈建云,张安生,佘有盛,张静

No Lean No Project Actual Status Leader Team member

6AAS-LEAN-

006

Home BU pre-forming PPH improvement: PPH: 60pcs

Phase1 (Oct-30):PPH from 47pcs to 53pcsPhase2(Dec-10):PPH from 53pcs to 60pcs

Done 孙亮李应平,徐国华,罗孝华,周星光,谢晓玲,袁伟平

7AAS-LEAN-

007

Warehouse(Space saving; materials turn over days)

1. Raw material Turn over day: 20days to 8.5 days2. Space utilization: 39%~61%

Done 黄香英杨斌 ,罗丽华 ,陆棋妹,王丽君,吉桂兰 ,覃玉领 ,胡小群 ,刘志红

8AAS-LEAN-

008Avoid wasting

Electronic cost saving : about 80K RMB, is waiting for FIN dept confirmation

Done 陈外兵王世峰,章凯,彭少建,钟德顺,乔金志龚德武,张丽娟,陈芳

9AAS-LEAN-

019

PCBA DIP PPH improvement: Target: 7.2pcs

PPH from 5.5pcs/H to 7.3pcs/H Done 欧明戴丽萍,黄培龙,朱伟波,卢文召,陶伟军

10AAS-LEAN-

010

Material supply Efficiency: 400pcs to 1200pcs /H

1.Materials supply Eff: 1050pcs/H2. Manpower saving: 2 operators

Ongoing

杨珂杨斌 ,各仓管,SQE ,采购员,欧明,佘有盛

序号专案编号专案名称专案改善目标负责人

1 AAS-LEAN-011 降低电源板来料抽检不良率电源板来料抽检DPPM由4800降低到900

李绍良

2 AAS-LEAN-012 降低P-DVD按键板不良率 P-DVD按键板不良率降低30% 焦火根

3 AAS-LEAN-013 降低P-DVD作业不良 P-DVD组装作业不良降低30% 章爱兵

4 AAS-LEAN-014 提升P-DVD组装线效率提升P-DVD CBU组装PPH由2.3提升到2.9pcs/per/h

张长新

5 AAS-LEAN-015提升出AAS-P SKD机种生产效率

提升出AAS-P SKD生产效率25% 李应平

6 AAS-LEAN-016 物流效率提升1.供料人员减少10%2.实现小批量供料上线

莫财江

7 AAS-LEAN-017 二楼车间生产节能改善生产电费降低8% 陈外兵

ASD Electronics Ltd. - hksq.org · CKD customer Q 3. CBU 4. RMA 5. Drive quality improvement from...

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